Dredge bucket and lip therefor



April 14, 1925. 1,533,910

G. R. HANKS ET AL I DREDGE BUCKET AND LIP THEREFOR Filed June 25, 1924 2 Sheets-Sheet 1 April 14, 1925- 1,533,910

G. R. HANKS ET AL DREDGE BUCKET AND LIP THEREFOR Filed June 25, 1924 2 Sheets-Sheet 2 Patented "Apr. 14, 1925.

. UNITED STATES,

PATENT OFFICE.

GEORGE E. HANKS, OF HIGH BRIDGE, NEW JERSEY, AND GERRITT V. WOOD, OF OAK- LAND, CALIFORNIA, ASSIGNORS TO TAYLOR-WHARTON IRON AND STEEL COM- PANY, OF HIGH BRIDGE, NEW JERSEY, A CORPORATION OF NEW JERSEY.

DIR-EDGE BUCKET AND LIP THEREFOR.

Application filed June 25,

= ters Patent 1310570. granted July 22, 1919,

to TJ. D. Hopfield. \Vhile lips of this type possess certain advantages over the ordinary horse-shoe lip, they suffer the disadvantage of too much overhang which is unsupported other than by rivets so that under repeated shifting of the digging strain from one side of the lip to the other, the lip works loose, shears the rivets and tears the bucket.

Objects of our invention are to improve the construction of dredge buckets and lips so that there will be no relative unsupported overhang, no shearing strain on the rivets,

and no tendency of the lips to work loose with consequent damage to the hood of the bucket. 7

With such and other objects in view, the nature, characteristic features and scope of the invention will more readily be understood from the following description taken in connection with the accompanying drawings, forming a part hereof, wherein Figure 1 is an elevational, view of a bucket and lip assembly embodying our invention, a portion of the lip being broken away, Figure 2 is a side elevational view, Figure 3 is a section on line 33 of Figure 2,

Figure 4 is a section on line 44' of Figure 1,

Figure 5 is a plan view with the lip broken away, Figure 6 is a section on line 66 of Figure 2,

gigure 7 is a perspective view of the lip, an

Figure 8 is a sectional view of a modified form of key or end lock.

According to our invention, the hood 5 1924. Serial in. 722,304.

of the dredge bucket is provided with a continuous or intact lip seating edge 6; and the side walls 7 of the hood are of gradually increasing thickness rearwardly, the increased.

wall thickness being symmetrically distributed so as to avoid isolated heavy sections of metal. The purpose of the additional metal in the sides of the hood, aside from strengthening the hood, is to provide for slots or recesses 8 in the inside faces of the walls 7 The recesses 8 co-operate with lip elementstaper following the general taper of'the hood.

The inside flanges 11 are provided at or in the vicinity of the rear extremities with lateral lugs or offsets 14 of substantially wedge form in the sense that they follow the taper of the lip and therefore are thickest at the bottoms, as at 15. The lugs 14 are designed to enter and fill the recesses 8 of the hood, which conform to the lugs and are of maximum capacity at the bottoms as indicated at 16. Manifestly, regardless of the direction of the digging strain, an adequate bearing is always provided for the lip which accordinglycannot work loose andshear the rivets or damage the bucket. The general taper of the lip from its cutting edge rearwardly is substantially that of the interior of the bucket and hence there are no obstructions to interfere with the filling of the bucket.

The hood has the usualabutment 17 for the outside flange; and the usual rivets are indicated at. 18.

In Figure 8, there is illustrated a slight modification wherein the recesses 8 have their end walls undercut, as at 19., to conform to the undercut lugs 20 of the. lip. The office of this construction and arrangement is the same asthat previously described, namely, to augment the wedging action of the lip under changing direction of stress.

Having described our invention, we claim:

1. A .dredge bucket having its hood formed with a lip seat, a lip adapted to said seat and having flanges inside and outside the hood, the inside flanges having a wedge connection with the hood.

2. A dredge bucket having its hood formed with a marginal seat finished in one plane, and a lip having elem'ents straddling the seat, some of which are keyed to the hood.

3. A dredge. bucket having its hood formed with a seat for a digging lip, and with lug seats, and a digging li-p applied to said seat and having lugs adapted to the lug seats. I e

4. A dredge bucket having its hood formed with a marginal seat for a digging lip and with lug seats, and a digging lip applied to said seat and havinginside and outside extensions, the insideextensions having lugsfor engagement with the lug seats.

5. A dredge bucket having its hood formed with a marginal seat for a digging lip and with lug seats, and a digging lip applied to said seat and having inside and outside flanges, the inside flanges having end lugs adapted to the lug seats.

6. A dredge bucket having its hood formed with a marginal seat fora di ging lip, and a digging lip applied to sai seat and having an outside flange and inside flanges, the inside flanges having means for establishing a wedge connection with the hood.

'7. A dredge bucket having its hood formed with a marginal seat for a digging lip, and a digging lip applied to said seat and having an outside flange and inside flanges, the inside flanges having tapered offsets and the hood having corresponding sockets to establish a wedge action interlock.

8. A dredge bucket having its hood formed with a marginal seat having sockets near the respective ends thereof. and a digging lip applied to said seat and having inside and outside hood engaging extensions, the inside extensions having integral wedge formations afl'orded bearing in said sockets.

9'. A dredge bucket lip having a hood seatin portion separated by inside and out side anges, the inside flanges having integral wedge formations.

10. A dredge bucket lip having a hood seating portion defined by inside and outside flanges, the inside flanges having tapered end lugs. In testimony whereof tures.

GEORGE R. HANKS. GERRITT V. WOOD.

we aifix our signa- 

